pub struct ClassBytes { /* private fields */ }
Expand description
A set of characters represented by arbitrary bytes.
Each byte corresponds to one character.
Implementations§
Source§impl ClassBytes
impl ClassBytes
Sourcepub fn new<I>(ranges: I) -> ClassByteswhere
I: IntoIterator<Item = ClassBytesRange>,
pub fn new<I>(ranges: I) -> ClassByteswhere
I: IntoIterator<Item = ClassBytesRange>,
Create a new class from a sequence of ranges.
The given ranges do not need to be in any specific order, and ranges may overlap. Ranges will automatically be sorted into a canonical non-overlapping order.
Sourcepub fn empty() -> ClassBytes
pub fn empty() -> ClassBytes
Create a new class with no ranges.
An empty class matches nothing. That is, it is equivalent to
Hir::fail
.
Sourcepub fn push(&mut self, range: ClassBytesRange)
pub fn push(&mut self, range: ClassBytesRange)
Add a new range to this set.
Sourcepub fn iter(&self) -> ClassBytesIter<'_> ⓘ
pub fn iter(&self) -> ClassBytesIter<'_> ⓘ
Return an iterator over all ranges in this class.
The iterator yields ranges in ascending order.
Sourcepub fn ranges(&self) -> &[ClassBytesRange]
pub fn ranges(&self) -> &[ClassBytesRange]
Return the underlying ranges as a slice.
Sourcepub fn case_fold_simple(&mut self)
pub fn case_fold_simple(&mut self)
Expand this character class such that it contains all case folded
characters. For example, if this class consists of the range a-z
,
then applying case folding will result in the class containing both the
ranges a-z
and A-Z
.
Note that this only applies ASCII case folding, which is limited to the
characters a-z
and A-Z
.
Sourcepub fn negate(&mut self)
pub fn negate(&mut self)
Negate this byte class.
For all b
where b
is a any byte, if b
was in this set, then it
will not be in this set after negation.
Sourcepub fn union(&mut self, other: &ClassBytes)
pub fn union(&mut self, other: &ClassBytes)
Union this byte class with the given byte class, in place.
Sourcepub fn intersect(&mut self, other: &ClassBytes)
pub fn intersect(&mut self, other: &ClassBytes)
Intersect this byte class with the given byte class, in place.
Sourcepub fn difference(&mut self, other: &ClassBytes)
pub fn difference(&mut self, other: &ClassBytes)
Subtract the given byte class from this byte class, in place.
Sourcepub fn symmetric_difference(&mut self, other: &ClassBytes)
pub fn symmetric_difference(&mut self, other: &ClassBytes)
Compute the symmetric difference of the given byte classes, in place.
This computes the symmetric difference of two byte classes. This removes all elements in this class that are also in the given class, but all adds all elements from the given class that aren’t in this class. That is, the class will contain all elements in either class, but will not contain any elements that are in both classes.
Sourcepub fn is_ascii(&self) -> bool
pub fn is_ascii(&self) -> bool
Returns true if and only if this character class will either match nothing or only ASCII bytes. Stated differently, this returns false if and only if this class contains a non-ASCII byte.
Sourcepub fn minimum_len(&self) -> Option<usize>
pub fn minimum_len(&self) -> Option<usize>
Returns the length, in bytes, of the smallest string matched by this character class.
Returns None
when the class is empty.
Sourcepub fn maximum_len(&self) -> Option<usize>
pub fn maximum_len(&self) -> Option<usize>
Returns the length, in bytes, of the longest string matched by this character class.
Returns None
when the class is empty.
Sourcepub fn literal(&self) -> Option<Vec<u8>>
pub fn literal(&self) -> Option<Vec<u8>>
If this class consists of exactly one byte, then return it as a literal byte string.
If this class is empty or contains more than one byte, then None
is returned.
Sourcepub fn to_unicode_class(&self) -> Option<ClassUnicode>
pub fn to_unicode_class(&self) -> Option<ClassUnicode>
If this class consists of only ASCII ranges, then return its corresponding and equivalent Unicode class.
Trait Implementations§
Source§impl Clone for ClassBytes
impl Clone for ClassBytes
Source§fn clone(&self) -> ClassBytes
fn clone(&self) -> ClassBytes
1.0.0 · Source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moreSource§impl Debug for ClassBytes
impl Debug for ClassBytes
Source§impl PartialEq for ClassBytes
impl PartialEq for ClassBytes
impl Eq for ClassBytes
impl StructuralPartialEq for ClassBytes
Auto Trait Implementations§
impl Freeze for ClassBytes
impl RefUnwindSafe for ClassBytes
impl Send for ClassBytes
impl Sync for ClassBytes
impl Unpin for ClassBytes
impl UnwindSafe for ClassBytes
Blanket Implementations§
Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)